Disco 3 TDV6 – estimated lifetime

Hello dear Land-Rover driver, I usually read more about the Opel forum as I drive a small car as a student. However, there are still real cars in the family, including a Land Rover Discovery III TDV6 HSE. The good piece is built 08 / 2006 and was bought as a new car at that time and now has approx. 230,000 km on the speedometer. For about 2 years it says: The next major defect is replaced, preferably by an RRS. But: the car simply wants to be replaced by a RRS. How are the experiences with such high running performance in this engine, what repairs do we have to expect in the near future and can anyone appreciate the maximum life of such a car? I am grateful for every answer! Best regards, Nimored